After Cyanogen has turned their back to OnePlus, the company is working hard to develop a brand new ROM for the One. The time has come, OnePlus OxygenOS is now finally available for download.

So what's OxygenOS? OxygenOS is a ROM for the OnePlus One based on Android 5.0.2 Lollipop. It's basically same as pure Google experience but with additional features. You can check out the top features of the OxygenOS in the video below.

For now, OxygenOS is not available through OTA update. You need to head over to the official website here to download and flash it manually.Source